Gas-insulated high-voltage switchgear contact temperature measuring device

Abstract

The invention discloses a contact temperature measuring device of a gas-insulated high-voltage switchgear, wherein, an optical fiber temperature-measuring sensor, whose signal output end is connected with the input end of an optical lens and located in the gas-insulated high-voltage switchgear, is used for collecting and sensing The optical signal of the temperature in the gas-insulated high-voltage switchgear and transmits the optical signal to the optical lens; the output end of the optical lens is connected with the input end of the signal processing circuit and installed on the wall of the gas-insulated high-voltage switchgear for receiving The optical signal transmitted by the optical fiber temperature sensor and the processed signal is transmitted to the signal processing circuit; the output terminal of the signal processing circuit is connected to the input terminal of the collector and is located outside the gas-insulated high-voltage switchgear for processing the optical lens Pass the signal and pass the processed signal to the collector. The invention thoroughly solves the electrical isolation between high and low voltage, can diagnose the thermal fault of the contact of the gas-insulated high-voltage switchgear, and guarantees the safe operation of the power system.

Description

technical field [0001] The invention relates to a contact temperature measuring device of a gas-insulated high-voltage switch cabinet. Background technique [0002] In order to ensure the safe operation of the power system, the diagnosis of thermal faults in the power system is generally valued by people. When the high-voltage bus is overloaded or the contact of the high-voltage switch is not in good contact, the contact resistance will become larger and heat will be generated when the load current flows. , This heating phenomenon causes insulation aging or even breakdown, thereby causing a short circuit, forming a major accident, and causing major economic losses. [0003] In the power supply system using power cables for power transmission and distribution, statistics show that more than 90% of cable failures are caused by joint failures, and joint contact resistance increases, overload, etc. cause joint temperature to be too high, which is the main cause of failure. reas...

AI Technical Summary

Problems solved by technology

[0002] In order to ensure the safe operation of the power system, the diagnosis of thermal faults in the power system is generally valued by people. When the high-voltage bus is overloaded or the contact of the high-voltage switch is not in good contact, the contact resistance will become larger and heat will be generated when the load current flows. , this heating phenomenon will cause insulation aging or even breakdown, which will cause short circuit, cause major accidents, and cause major economic losses

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